The horizontal line means that the three components i.e., the disconnector, the disconnector switch, and the circuit breaker fulfill the isolating function. Symbols: The four components except the load break switch have a horizontal line in their symbol.The circuit breaker protects the electrical circuit from damage that could be caused by high current from an overload or short circuit.
The following disconnect switches (safety switches) may be used for all resistance and motor. The disconnector switch performs the operations of the load break switch and the disconnector. Drawing Symbols Disconnect Switches, General Purpose Areas. The disconnector acts as a safety measure it isolates a part or the whole of a circuit and prevents current from flowing through this is done to prevent hazards during inspection, maintenance, and repair. Turning off the switch without using a tool can cause an arc flash, which could in turn result in a fire outbreak, damage to properties, or even injure you. Using a tool will save you from the hazards that could be caused from turning off the switch. The load break switch makes, breaks, and carries currents. To disconnect the circuit, you will need to use another tool. Operation: The four components perform distinct operations. The Hager WMPS3PIF 3 Pole Isolator Switch with Fan Symbol provides a safe and simple method of isolating mechanical extractor fans.Below are the major differences between the load break switch, disconnector, disconnector switch, and circuit breaker.
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